The Hartman effect is studied in a one dimensional photonic crystal doped with graphene
quantum dots. It is shown that the Hartman effect can be switched from negative to positive …

Quantum phenomena, including entanglement, superposition, tunneling, and spin–orbit
interactions, among others, are foundational to the development of recent innovations in …

How long does a quantum particle take to traverse a classically forbidden energy barrier? In
other words, what is the correct expression for quantum tunnelling time? This seemingly …

Time is one of the undisputed foundations of our life in the real world. Here it is argued that
inside small isolated quantum systems, time does not pass as we are used to, and it is …

Tunneling, though a physical reality, is shrouded in mystery. Wave packets cannot be
constructed under the barrier and group velocity cannot be defined. The tunneling particle …

We revisit the notions of the quantum-mechanical sojourn time in the context of the quantum
clocks to enquire whether the sojourn time be clocked without the clock affecting the …